Chris I see you are having some trouble with the early BB frame mounts. I have a picture of my original left 68 BB nova frame mount with the part number 3912597 and the right should be 3912598. I ran into a problem finding the correct motor mount when I did my car. I ended up finding the GM part number and buying it over the counter but it is no longer avaliable from gm. The BB frame mounts are the same as 67-68 camaro but use the SB motor mount. The design was changed for the 69 year do to the motor mount couldn't handle the BB power. This is a link to a site with the frame mount information. If you would like I can post a picture of my frame mount tonight. If you have aftermarket frame mounts this may be your problem I am not sure how good they are?
Jason
http://www.pozziracing.com/camaro_engine.htm